文章基本信息

标题：Analysis of Magnetic Dipole Moment for a 300-W Solar-Cell Array
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作者：Goo-Hwan Shin ; Dong-Guk Kim ; Se-Jin Kwon 等
期刊名称：Journal of Astronomy and Space Sciences
印刷版ISSN：2093-5587
电子版ISSN：2093-1409
出版年度：2019
卷号：36
期号：3
页码：181-186
DOI：10.5140/JASS.2019.36.3.181
语种：English
出版社：Korean Space Science Society
摘要：The attitude information of spacecraft can be obtained by the sensors attached to it using a star tracker, three-axis magnetometer, three-axis gyroscope, and a global positioning signal receiver. By using these sensors, the spacecraft can be maneuvered by actuators that generate torques. In particular, electromagnetic-torque bars can be used for attitude control and as a momentum-canceling instrument. The spacecraft momentum can be created by the current through the electrical circuits and coils. Thus, the current around the electromagnetic-torque bars is a critical factor for precisely controlling the spacecraft. In connection with these concerns, a solar-cell array can be considered to prevent generation of a magnetic dipole moment because the solar-cell array can introduce a large amount of current through the electrical wires. The maximum value of a magnetic dipole moment that cannot affect precise control is 0.25 A·m2, which takes into account the current that flows through the reaction-wheel assembly and the magnetic-torque current. In this study, we designed a 300-W solar cell array and presented an optimal wire-routing method to minimize the magnetic dipole moment for space applications. We verified our proposed method by simulation.
关键词：magnetic dipole moment;solar-cell array;GaInP/GaAs/Ge;current loop;attitude control;sensor